News Details
Ordinary polystyrene flame retardant
2017-11-8 10:52:11
Ordinary polystyrene flame retardant
Polystyrene (PS) consists of ordinary polystyrene, expanded polystyrene (EPS), high impact polystyrene (HIPS) and syndiotactic polystyrene (SPS). Ordinary polystyrene resin as non-toxic, odorless, colorless and transparent particles, like a glass of brittle material, the product with high transparency, light transmission rate can reach more than 90%, good electrical insulation properties, easy coloring, good processability, good rigidity and good corrosion resistance etc.. The disadvantage of ordinary polystyrene is brittle, low impact strength, easy to stress cracking, poor heat resistance and not resistant to boiling water.
For extrusion of PS foam, flame retardant can be achieved by using ordinary polystyrene flame retardant. There is no need to use the flame retardant synergist three to oxidize two antimony, because it can not produce synergistic effect, but because of its existence, it will produce droplets when the system is burning.
For ordinary polystyrene flame retardant used, requiring the use of good thermal stability, processing temperature of PS at 180 DEG C of 210 degrees Celsius, the processing temperature, flame retardant polystyrene ordinary will produce unstable, easy decomposition. Therefore, the use of high temperature resistant polystyrene flame retardant (it has a temperature of 230, 240 degrees Celsius) is required.
Halogen antimony system, namely gas phase flame retardant mechanism. Halogenated flame retardants are commonly used decabromodiphenyl oxide, six bromo twelve alkyl ring, eight bromo ether, four tetrabromobisphenol A, coupled with flame retardant synergistic agent two antimony oxide three, with less addition amount, characteristics of good flame retardant effect. But halogen flame retardants have been criticized by green environmental organizations, which have been restricted in some countries and banned. However, the United States, Japan and other countries are still allowed to use, so as a developing country in China, halogen flame retardant life of at least 10 years or more.
Treatment of plastics with brominated alkyl phosphates. This kind of flame retardant has the synergistic effect of PBr, which makes the flame retardant effect remarkable. At the same time, it can also improve the rheological and processing properties of plastics, and has little influence on the physical and mechanical properties of plastics.
In the past ten years in flame retardant technology, with intumescent flame retardant Camino initiative at the University of Turin in Italy has played a huge role, this kind of PN flame retardant has the advantages of high efficiency, low toxicity, high heat and light stability, low smoke, low corrosion, little impact on the processing and Mechanical properties, will not cause environmental pollution. Only 2530 parts in plastic can reach UL94V0 grade. Production report of intumescent flame retardant products in china.
Flame retardant polypropylene with graft copolymer of acrylic five bromo benzyl ester and three ethylene propylene diene monomer. The flame retardant plastics have high impact strength and can be used as engineering plastics on some occasions.
Inorganic filler, flame retardant polypropylene, so-called inorganic filler, refers to aluminum hydroxide and magnesium hydroxide, they have the function of flame retardant and smoke suppression. In order to achieve the desired effect, particle and surface treatment are key technologies applied to different plastics. It is necessary to choose the matching surfactant carefully to make it compatible with plastics and disperse evenly in the plastics, which will not affect the mechanical properties of plastics greatly.
Tris(2-chloroisopropyl)Phosphate(TCPP)
Packing: NW 250KG / galvanized iron (a small cabinet to play prop 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons), or 23 tons ISOTANK.
The product output: 100 tons / month
Shipping Port: China Shang Hai
Price offer is valid: 15 days
Jincang time: 15 days (commodity inspection)
Export rights: the right to import and export company.
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Because ATH and magnesium hydroxide can play the role of flame retardant and smoke suppression in different temperature range, the combined use of the two can make the plastic play a continuous flame retardant effect in a wide range of temperature. Here is to emphasize that in the processing of plastics by magnesium hydroxide, in order to achieve better flame retardancy and suitable mechanical properties, adding magnesium hydroxide mixing process, should adopt the two step feeding mode, it will get a better result than feeding.
In general, suitable for flame retardant plastics can be used for PE processing, but because of the difference on the structure, thermal stability and cracking temperature, some aromatic brominated flame retardants (such as DecaBDE) on PE especially the application effect on the LDPE will be better.
It is also pointed out that chlorine based flame retardants, such as chlorinated paraffin wax and anti clone, will be better used in some occasions. For example, the application of the clone in the PE insulation layer of the cable makes the PE have excellent voltage resistance and flame retardant effect. Some literatures reported that chlorine flame retardants and brominated flame retardants can produce synergistic effects, although they are not obvious, but they are better than the flame retardants alone.
When adding a large amount of plasticizer in PVC to make it soft PVC, it is necessary to flame retardant treatment. It should be emphasized that besides smoke retardants, smoke suppression is also an urgent problem to be solved by PVC.
Selection of flame retardant plasticizer - aryl phosphate ester and aryl alkyl phosphate here should be careful selection of flame retardant plasticizer, avoiding the increase in flame retardancy and deterioration of other properties of plastics, and pay special attention to the materials with low tender smoothness.
Smoke suppressant traditional smoke suppressant with molybdenum trioxide, magnesium hydroxide, eight ammonium molybdate, zinc borate and two ferrocene. The amount of smoke inhibitor added with molybdenum series is between 2%3%, which can reduce the smoke yield of 30%80%. If it is combined with ATH, magnesium hydroxide or calcium carbonate, it will have better effect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Polystyrene (PS) consists of ordinary polystyrene, expanded polystyrene (EPS), high impact polystyrene (HIPS) and syndiotactic polystyrene (SPS). Ordinary polystyrene resin as non-toxic, odorless, colorless and transparent particles, like a glass of brittle material, the product with high transparency, light transmission rate can reach more than 90%, good electrical insulation properties, easy coloring, good processability, good rigidity and good corrosion resistance etc.. The disadvantage of ordinary polystyrene is brittle, low impact strength, easy to stress cracking, poor heat resistance and not resistant to boiling water.
For extrusion of PS foam, flame retardant can be achieved by using ordinary polystyrene flame retardant. There is no need to use the flame retardant synergist three to oxidize two antimony, because it can not produce synergistic effect, but because of its existence, it will produce droplets when the system is burning.
For ordinary polystyrene flame retardant used, requiring the use of good thermal stability, processing temperature of PS at 180 DEG C of 210 degrees Celsius, the processing temperature, flame retardant polystyrene ordinary will produce unstable, easy decomposition. Therefore, the use of high temperature resistant polystyrene flame retardant (it has a temperature of 230, 240 degrees Celsius) is required.
Halogen antimony system, namely gas phase flame retardant mechanism. Halogenated flame retardants are commonly used decabromodiphenyl oxide, six bromo twelve alkyl ring, eight bromo ether, four tetrabromobisphenol A, coupled with flame retardant synergistic agent two antimony oxide three, with less addition amount, characteristics of good flame retardant effect. But halogen flame retardants have been criticized by green environmental organizations, which have been restricted in some countries and banned. However, the United States, Japan and other countries are still allowed to use, so as a developing country in China, halogen flame retardant life of at least 10 years or more.
Treatment of plastics with brominated alkyl phosphates. This kind of flame retardant has the synergistic effect of PBr, which makes the flame retardant effect remarkable. At the same time, it can also improve the rheological and processing properties of plastics, and has little influence on the physical and mechanical properties of plastics.
In the past ten years in flame retardant technology, with intumescent flame retardant Camino initiative at the University of Turin in Italy has played a huge role, this kind of PN flame retardant has the advantages of high efficiency, low toxicity, high heat and light stability, low smoke, low corrosion, little impact on the processing and Mechanical properties, will not cause environmental pollution. Only 2530 parts in plastic can reach UL94V0 grade. Production report of intumescent flame retardant products in china.
Flame retardant polypropylene with graft copolymer of acrylic five bromo benzyl ester and three ethylene propylene diene monomer. The flame retardant plastics have high impact strength and can be used as engineering plastics on some occasions.
Inorganic filler, flame retardant polypropylene, so-called inorganic filler, refers to aluminum hydroxide and magnesium hydroxide, they have the function of flame retardant and smoke suppression. In order to achieve the desired effect, particle and surface treatment are key technologies applied to different plastics. It is necessary to choose the matching surfactant carefully to make it compatible with plastics and disperse evenly in the plastics, which will not affect the mechanical properties of plastics greatly.
Tris(2-chloroisopropyl)Phosphate(TCPP)
Packing: NW 250KG / galvanized iron (a small cabinet to play prop 20 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons), or 23 tons ISOTANK.
The product output: 100 tons / month
Shipping Port: China Shang Hai
Price offer is valid: 15 days
Jincang time: 15 days (commodity inspection)
Export rights: the right to import and export company.
The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.
Because ATH and magnesium hydroxide can play the role of flame retardant and smoke suppression in different temperature range, the combined use of the two can make the plastic play a continuous flame retardant effect in a wide range of temperature. Here is to emphasize that in the processing of plastics by magnesium hydroxide, in order to achieve better flame retardancy and suitable mechanical properties, adding magnesium hydroxide mixing process, should adopt the two step feeding mode, it will get a better result than feeding.
In general, suitable for flame retardant plastics can be used for PE processing, but because of the difference on the structure, thermal stability and cracking temperature, some aromatic brominated flame retardants (such as DecaBDE) on PE especially the application effect on the LDPE will be better.
It is also pointed out that chlorine based flame retardants, such as chlorinated paraffin wax and anti clone, will be better used in some occasions. For example, the application of the clone in the PE insulation layer of the cable makes the PE have excellent voltage resistance and flame retardant effect. Some literatures reported that chlorine flame retardants and brominated flame retardants can produce synergistic effects, although they are not obvious, but they are better than the flame retardants alone.
When adding a large amount of plasticizer in PVC to make it soft PVC, it is necessary to flame retardant treatment. It should be emphasized that besides smoke retardants, smoke suppression is also an urgent problem to be solved by PVC.
Selection of flame retardant plasticizer - aryl phosphate ester and aryl alkyl phosphate here should be careful selection of flame retardant plasticizer, avoiding the increase in flame retardancy and deterioration of other properties of plastics, and pay special attention to the materials with low tender smoothness.
Smoke suppressant traditional smoke suppressant with molybdenum trioxide, magnesium hydroxide, eight ammonium molybdate, zinc borate and two ferrocene. The amount of smoke inhibitor added with molybdenum series is between 2%3%, which can reduce the smoke yield of 30%80%. If it is combined with ATH, magnesium hydroxide or calcium carbonate, it will have better effect.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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